Electrical Machines Field weakening control method is used for the _________ ? both A and B above rated speed below rated speed None of these both A and B above rated speed below rated speed None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. The highest speed of the alternators is 600 rpm. 3600 rpm. 3000 rpm. 500 rpm. 600 rpm. 3600 rpm. 3000 rpm. 500 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip speed is the sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. difference of synchronous speed and actual rotor speed. half of the sum of synchronous and rotor speeds. sum of synchronous and rotor speeds. difference of actual rotor speed and synchronous speed. difference of synchronous speed and actual rotor speed. half of the sum of synchronous and rotor speeds. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At slip s = 1 torque developed in machine is electromagnetic torque. none. starting torque. maximum torque. electromagnetic torque. none. starting torque. maximum torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC generators has rising V-I characteristics? None of them. Shunt. Series. Compound. None of them. Shunt. Series. Compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The volt-ampere euation for a long-shunt compound motor is given by Vt = Ea + Iara+ ILrs Vt= Ea– Iara Vt = Ea + Ia(ra + rs) Vt= Ea + Iara Vt = Ea + Iara+ ILrs Vt= Ea– Iara Vt = Ea + Ia(ra + rs) Vt= Ea + Iara ANSWER DOWNLOAD EXAMIANS APP
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